ensure .keywords is always a dict

3 files changed, 9 insertions, 9 deletions

diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
index c0a9a3b..7b3cb96 100644
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -89,9 +89,11 @@ class TestPartial(unittest.TestCase):
         # exercise special code paths for no keyword args in
         # either the partial object or the caller
         p = self.thetype(capture)
+        self.assertEqual(p.keywords, {})
         self.assertEqual(p(), ((), {}))
         self.assertEqual(p(a=1), ((), {'a':1}))
         p = self.thetype(capture, a=1)
+        self.assertEqual(p.keywords, {'a':1})
         self.assertEqual(p(), ((), {'a':1}))
         self.assertEqual(p(b=2), ((), {'a':1, 'b':2}))
         # keyword args in the call override those in the partial object
diff --git a/Misc/NEWS b/Misc/NEWS
index e76f187..b5a149c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -27,6 +27,8 @@ Core and Builtins
 Library
 -------
 
+- The keywords attribute of functools.partial is now always a dictionary.
+
 - Issue #24134: assertRaises() and assertRaisesRegexp() checks are not longer
   successful if the callable is None.
 
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index 6397ba9..2ba92ba 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -132,17 +132,13 @@ partial_new(PyTypeObject *type, PyObject *args, PyObject *kw)
         Py_DECREF(pto);
         return NULL;
     }
-    if (kw != NULL) {
-        pto->kw = PyDict_Copy(kw);
-        if (pto->kw == NULL) {
-            Py_DECREF(pto);
-            return NULL;
-        }
-    } else {
-        pto->kw = Py_None;
-        Py_INCREF(Py_None);
+    pto->kw = (kw != NULL) ? PyDict_Copy(kw) : PyDict_New();
+    if (pto->kw == NULL) {
+        Py_DECREF(pto);
+        return NULL;
     }
 
+
     pto->weakreflist = NULL;
     pto->dict = NULL;